Timezone Converter

See a single moment in time across timezones — DST-aware, processed locally.

Date / time

Source timezone

Toggle to watch every zone tick in real time.

How to use Timezone Converter

Type a date/time like 2026-05-30 15:00 and select the source timezone — every other zone updates.
ISO 8601 with an offset (2026-05-30T15:00+09:00) or Z suffix is parsed exactly. Source zone is ignored in that case.
Numbers are treated as Unix epoch seconds or milliseconds (auto-detected).
Click Now for the current moment, or toggle Live for a real-time world clock.
DST transitions in any zone are handled automatically by the browser's IANA database — no library required.